Diagrams is a full-featured framework and embedded domain-specific langauge for creating
declarative vector graphics and animations.

This package is just a convenient wrapper
around the diagrams-core, diagrams-lib and
diagrams-contrib packages, so they can be
installed with a single cabal install diagrams
command.

The package also comes with flags to enable six
different backends.
A Haskell-native SVG
backend (the diagrams-svg package)
can be selected with -fsvg. This
flag is enabled by default, so if you do not
want the SVG backend, you must explicitly
disable it with -f-svg. The SVG backend does not
yet quite support all the features of the cairo
backend: text alignment and embedded images are
the two main missing features at this point, and
of course it can only produce SVG images. It is,
however, much easier to install, so it is the
out-of-the-box default.

There is also a cairo backend (the
diagrams-cairo package) which can be selected
with the -fcairo flag. It is fully-featured and
can produce PNG, PS, PDF, SVG, or animated
GIF output; however,
due to its dependencies it can be difficult to
install on some platforms (notably OS X).

In addition, there is a GTK backend based on the
cairo backend, for rendering diagrams directly to
GTK windows. You can enable it with the -fgtk flag.

The Haskell-native postscript
backend (the diagrams-postscript package)
can be selected with the -fpostscript flag. The only
feature it does not support is transparency.

There is a Rasterific backend which is
also Haskell-native (the diagrams-rasterific
package) which can be selected with the -frasterific
flag. This is a fully featured backend with the ability
to produce PNG, JPG, TIFF, BMP and animated GIF output.

Finally there is a Canvas backend, also haskell native,
which can be selected with the -fcanvas flag. This
backend allows users to write interactive images onto
their web browsers.

The package also comes with flags to enable six different backends.
The native SVG backend is
enabled by the -fsvg flag and is enabled by default. If you don't
want it, you must explicitly disable it with -f-svg.

The cairo backend is
disabled by default but can be selected with the -fcairo flag. In
addition, the GTK backend
is based on the cairo backend (but split into a separate package to
make installing the cairo backend easier). It can be selected with
the fgtk flag.